Fitting guide: True to size. Calf circumference: ~12 inches. Boot shaft height: ~25 inches. Click on the size chart icon to see the exact measurement. Please adjust 0.5 to 1 sizes up for high heels 4 inches or taller, not including the height of the platform (No adjustment needed for open toe shoes like sandals). You may adjust 0.5 size up for shoes styles with pointed or sharp/narrow toe. All shoes are Medium width except those specially indicated as Wide width.